Door for grain-cars.



No. 813,681. PATENTED FEB. 27, 1906.

v BLMQUIST DOOR FOR GRAIN CARS. APPLICATION FILED 13120.12, 1904. 3SHBETS SHBET l n C vil I II) n5 I 2 D T H. Q a

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j 0 o 0 H a g 5 an PATEN TED F v. ELMQUIST. DOOR FOR GRAIN CARSAPPLICATION FILED DEC. 12, 1904.

. l P q Q f v Y 7 C 9 I [I 1 w w i 4 J I p 4 W Z I l Z No. 813 631.PATENTED V ELMQUIST FEB 27, 1906.

DOOR FOR GRAIN CARS. APPLICATION FILED DEG.12, 1904.

3 SHE-BTS.-SHEET 3.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed December 12, 1904. Serial No. 236,544.

To aZZ whom it may concern.-

Be it known that I, VICTOR ELM UIsT, a citizen of the United States, anda resident of Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Doors for Grain-Cars, ofwhich the following is a full, clear, and exact description.

My invention relates to doors for graincars; and its object is to enablethe door to be manipulated from the outside and raised and loweredeasily without the necessity of crowbars or other implements of violenceso often used by desperate men upon refractory doors and often to thegreat injury of the cars. This I accomplish by the means hereinafterfully described, and as particularly pointed out in the claims.

In the drawings, Figure l is a lon itudinal vertical section of slightlymore t an onehalf of a grain-car having my improvements applied thereto.Fig. 2 is a side elevation of my improved grain-door and the door-frametherefor drawn to a larger scale.- Fig. 3 is a plan view thereof. Fig. 4is a transverse vertical section thereof, showing the door down. Fig. 5'is a similar view showing in dotted lines the door swung up out of theway.

Referring to the drawings, A represents the body of a box-car suitablefor the carrying of grain, and B represents the longitudinal timber orplate over the doorway, and C C the door-posts. Journaled in suitablebearings a and b, secured to the said doorposts or to the inner walls ofthe car adjacent to and on each side of the door, are parallel verticalscrews D and E. The lower bearings a, a for the heel of these screws arelocated about the center of height of the door, and in order toreinforce and assist these lower bearings to sustain the weight of thesescrews and the load carried thereby I have provided the columns orpilasters a a, which rest upon the floor F of the car and extendvertically up to and bear against the under side of the said bearings.The screws D and E extend up through the upper bearings b to about thehorizontal plane of the top of the doorway, and each has a mitered gear0 suitably secured thereto, which are engaged by the mitered pinions dd, that are secured to a horizontal shaft F. This shaft is journaled inbearings that are preferably fastened to or in front of the plateB ofthe car, and it extends from a point slightly beyond one side of thedoor to and through suitable bearings in the opposite end of the car,where its outer end is provided witha suitable handwheel 6, by means ofwhich it can be turned. If desired, the shaft can be locked againstturning by means of a chain e on the outside of the car, one end ofwhich is secured to the end of the car and the other end looped throughthe wheel and fastened by a seal or lock 6 back upon itself. If desired,shaft F may be operated by a suitablyconnected vertical shaft extendingeither up through the roof of the car or down through the floor of thesame. This suggestion is not embodied in the drawings, because it isobviously the equivalent of the elongation of shaft F through the end ofthe car.

The screws D and E may, if desired, correspond, but I prefer to makethem right and left, respectively. Mounted on and engaged by thesescrews are correspondingly-tapped sleeves G G, which are of any desiredouter design and have Lshaped arms 9 gprojecting therefrom toward eachother that extend horizontally and then vertically a short distance andare provided with bearings in their upper ends in which the ends of thehorizontal pivotal shaft or pintle H is j ournaled on which thegrain-door I is suspended. The door I is of such height that when thesleeves G are at the limit of their downward movement its lower edgewill bear down upon the floor of car and is of such width that its sideedges can lap against the edges of the door-frame or door-posts. Whenthe door is at the limit of its downward movement, its lower cornersenter the recesses made to receive them in plates h h, secured to thefloor at the base of the door-posts, and hold the door tightly againstthe door-frame and close the lower portion of the doorway.

If desired, a door J for closing or partly closing the upper portion ofthe doorway when the door I is down can be hinged to the pintle I andsecured in such raised position in any desired manner.

The operation of my invention is as follows: Suppose the door to beclosing the lower portion of the doorway and it is desired to raise thesame. The shaft F is first unlocked and then turned in the properdirection, so that, through the miter gears and pinions c and d, itturns screws D E and causes the sleeves G G to simultaneously moveupward thereon and lift the door I until its upper edge is in front. ofand it closes the upper portion of the doorway. The door is then swunginward and upward to a horizontal position, and its lower edge isforced'past and catches on the spring-hooks K K, which are of aninverted- L shape and have their horizontal portions screwed orotherwise suitably secured to the roof of the car. When it is desired tolower the door, its lower edges are released from the hooks and it isallowed to gravitate to a perpendicular position, and then, throughshaft F, the screws are turned so that the sleeves move downward andlower the door to its first-mentioned position, where it can be secured,as hereinbefore explained.

What I claim as new is 1. The combination with a car-body having asuitable doorway in the side thereof, of a grain-door, a pintle-boltfrom which said door is suspended, two revolving vertical screwsarranged one on one side and the other on the other side of saiddoorway, internallyscrew-threaded non-revolving sleeves on said screwshaving L-shaped projections extending above the same which are providedwith horizontal bearing-bosses in which the ends of the pintle bolt arejournaled, and means engaging said screws whereby said sleeves and theparts carried thereby are raised and lowered.

2. The combination with a car-body having a suitable doorway in the sidethereof, of a swinging grain-door, a pintle-bolt from which said door issuspended, an auxiliary door mounted thereon and adapted to be swungabove said first-mentioned door, two revolving vertical screws arrangedone on one side and the other on the other side of said doorway,internally-screw-threaded non-revolving sleeves on said screws havingL-shaped projections extending above the same which are provided withhorizontal bearing-bosses in which the ends of the pintle-bolt arejournaled, miter-gears on the upper ends of said screws, a longitudinalshaft, miter-pinions thereon engaging said miter-gears, and a hand-wheelmounted on said shaft on the outside of said car for revolving saidshaft whereby said door is raised and lowered.

3. The combination with a car-body having a suitable doorway in the sidethereof, of a grain-door, a pintle-bolt from which said door issuspended, a superimposed auxiliary door pivotally connected to saidpintle, two

revolving vertical screws arranged one on one side and the other on theother side of said doorway and internally-screw-threaded non-revolvingsleeves on said screws in which the ends of said pintle-bolt are journaled.

4. The combination with a oar-body having a suitable doorway in the sidethereof, of a grain-door, a pintle-bolt from which-said door issuspended, a superimposed auxiliary door pivotally connected to saidpintle, two revolving vertical screws arranged one on one side and theother on the other side of said doorway, internally-screw-threadednonrevolving sleeves on said screws in which the ends of saidpintle-bolt are j ournaled and bearings in which the heels of saidscrews are j ournaled and columns supporting the same.

5. The combination with a car-body having a suitable doorway in the sidethereof, of a grain-door, a pintle-bolt from which said door issuspended, a superimposed auxiliary door pivotally connected to saidpintle, two revolving vertical screws arranged one on one side and theother on the other side of said doorway, internally-screw-threadednonrevolving sleeves on said screws in which the ends of saidpintle-bolt are journaled, mitergears on the upper ends of said screws,a longitudinal shaft, and miter-pinions thereon engaging saidmiter-gears.

6. The combination with a car-body having a suitable doorway in the sidethereof, of a grain-door, a pintle-bolt from which said door issuspended, a superimposed auxiliary door pivotally connected to saidpintle, two revolving vertical screws arranged one on one side and theother on the other side of said doorway, internally-screw-threadednonrevolving sleeves on said screws in which the ends of saidpintle-bolt are j ournaled, mitergears on the upper ends of said screws,a longitudinal shaft, miter-pinions thereon engaging said miter-gears,and means on the outside of said car for operating said shaft.

In testimony whereof I have hereunto set my hand this 3d day ofDecember, A. D.

VICTOR ELMQUIST. Witnesses:

E. F. ELMBERG, FRANK D. THOMASON.

